GDL

Journal from gdlhub / 2017-08-15 15:04:48
Oleh : Issam Al-Azzoni, King Saud University
Dibuat : 2015-10-15, dengan 1 file

Keyword : Colored Petri Nets Heterogeneous clusters Server consolidation Discrete optimization CPN Tools State space search
Url : http://www.sciencedirect.com/science/article/pii/S1319157815000646
Sumber pengambilan dokumen : web

In this paper, we present a new approach to server consolidation in heterogeneous computer clusters using Colored Petri Nets (CPNs). Server consolidation aims to reduce energy costs and improve resource utilization by reducing the number of servers necessary to run the existing virtual machines in the cluster. It exploits the emerging technology of live migration which allows migrating virtual machines between servers without stopping their provided services. Server consolidation approaches attempt to find migration plans that aim to minimize the necessary size of the cluster. Our approach finds plans which not only minimize the overall number of used servers, but also minimize the total data migration overhead. The latter objective is not taken into consideration by other approaches and heuristics. We explore the use of CPN Tools in analyzing the state spaces of the CPNs. Since the state space of the CPN model can grow exponentially with the size of the cluster, we examine different techniques to generate and analyze the state space in order to find good plans to server consolidation within acceptable time and computing power.

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